21668787

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{8389}}^1$

素因数の和:8443

約数の個数: 24

約数和(自身を含む): 36647520

約数和(自身を除く): 14978733

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 8389, 25167, 58723, 75501, 176169, 343949, 528507, 1031847, 2407643, 3095541, 7222929, 21668787]

約数ペア:

[(1, 21668787), (3, 7222929), (7, 3095541), (9, 2407643), (21, 1031847), (41, 528507), (63, 343949), (123, 176169), (287, 75501), (369, 58723), (861, 25167), (2583, 8389)]